On Impulsive Noise Suppression Techniques in Color Images

摘要

In the paper the impulsive noise suppression algorithms based on arithmetic mean and vector median scheme are concerned. Usually, the performance of the entire filtering process, which includes noisy pixels detection and noise replacement, is presented. However, the aim of the research presented here, is to focus on the noise replacement step alone. The analyzed algorithms process the corrupted images using external knowledge about locations of noisy pixels in two variants: with maps containing true information about noise and those obtained from very efficient impulsive noise detection scheme.